Calculator ∞

I use this calculator for many advanced and all of my variable based calculations for one reason - this calculator allows you to input the equation in its original form. For students, that means they can input their equations in textbook format father than a long string of numbers and variables with excess parentheses so the program can sort it out. A couple things I would like to see. Needs and updated manual. Also, still can’t find the infinity button needed for some calculations. Also, would like the ability to tell it which variable to solve for. Right now it automatically solves for x but there are times i have multiple variables and need specific ones. Also, I would like to complement this developer for always upgrading the existing app instead of trying to get people to repurchase a newer version as other app developers have been trying. I feel confident this developer won’t let his existing customers down and that says a lot these days.

I use this calculator almost every day if not every day. As a retired mechanical engineer, I spend most of my days doing research on about everything that pops into my head. The calculator uses numerical methods for calculating single integrals but does do numerical trigonometric solutions. The calculator also has plenty of memory slots. The shift key opens up other nice functions. It doesn’t allow for easy copying and pasting of results or equations that led to those results. Obviously, for people who really know how to do serious programming, Excel is almost infinitely better for calculating anything with the bonus of being able to print just about anything you like. I’ve written single cells with about 7 nested if statements using Excel. For a carry around calculator that isn’t programmable, this one is great and well worth the $4.99 or whatever it costs close to the aforementioned amount.

This calculator does all kind of neat stuff. Without restating its functions (the app description does that well), I can say that as a scientist, engineer, and pilot, this calculator exceeds my very demanding expectations in so many ways. It makes beautiful graphs that are traceable and zoomable. It works with equations with ease, even complex ones. Calculus and statistics are no problem (again, pardon my pun) for this thing, too. I’d love it if it had a built in E6B, but other than that, it has everything! I totally recommend it to students, teachers, and professionals in STEM! Great work devs!

It’s a great, feature filled scientific calculator, but they made the ridiculous decision to put the “options” button slightly overlapping the “0” button, resulting in accidentally opening the options frequently. It’s a bizarre decision, given that sliding the keyboard up a very small amount would solve the problem while only reducing the size of the output screen a negligible amount. Or they could have it overlap any button that isn’t used in approximately 1/10 of every equation I enter. Or just put it in the lower corner of the display area. I feel like they essentially places it in the worst possible location, and it makes me not want to use an otherwise great app.

The title pretty much says it all... This app has been invaluable to my studies, and it has a ton of useful features if you start to snoop around. Having explicit constants from all corners of physics, math, and chemistry is so helpful! One thing it's lacking is in graphing abilities. The graphing utility is very limited. That said, Desmos exists if you really wanna graph something beautifully. A final feature suggestion would be a single app mode with a timer. I use this so often, i haven't really needed a calculator since i got here. The one exception is during exams and tests. If it had something similar to what Desmos has where you can't exit the app, and you'll have proof you only used the calculator at the end of the exam, i could probably convince some professors to let me use it! Overall wonderful app that is a joy to use, and definitely worth well over whatever i spent on it back in high school!